Last updated: July 2, 2025
In Gujan-Mestras, France, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you avoid sunburn and long-term damage, allowing you to enjoy the beautiful outdoor climate without the risks. With a Cfb climate, Gujan-Mestras experiences moderate temperatures and varying UV exposure throughout the day, making it essential to check the UV Index for peak hours, especially when it reaches a high of 9 between 1 PM and 3 PM. By being informed, you can take the necessary precautions to embrace the sun safely!
The UV Index data reveals a dynamic shift throughout the day, showcasing the sun's intensity rising to its peak around noon. Starting from a gentle 1 at 7:00 AM, the index slowly climbs, reaching 3 by 10:00 AM. The intensity escalates dramatically, peaking at an impressive 9 from 1:00 PM to 3:00 PM, indicating a time when sun protection is crucial. As the afternoon wanes, the UV Index gradually declines, dropping to 4 by 6:00 PM before settling back to a low 2 by 7:00 PM. This data underscores the importance of staying vigilant against UV rays during midday when exposure risks are at their highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
The UV Index demonstrates significant seasonal variations, affecting both residents and visitors throughout the year. January and December experience the lowest UV levels, categorized as low, with a burn time of 45 minutes. From February, the UV index starts to rise, entering the moderate exposure category, and peaks during the late spring and summer months—May to August—when it reaches very high levels (8 to 10), resulting in a critical burn time of just 15 minutes. The highest risk months for UV exposure are June and July, where precautions are essential. As the fall months approach, the UV levels decrease, returning to moderate assessments by October through November. To minimize the risk of UV-related health issues, visitors and residents should take savvy precautions during the high-risk months by wearing sunscreen, protective clothing, and seeking shade during peak sun hours.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Paris UVI | 2 | 3 | 5 | 6 | 8 | 9 | 8 | 8 | 6 | 4 | 2 | 1 |
| Lyon UVI | 2 | 3 | 5 | 6 | 8 | 10 | 9 | 8 | 6 | 5 | 3 | 2 |
| Gujan-Mestras | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Nice UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Marseille UVI | 2 | 4 | 5 | 7 | 9 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Toulouse UVI | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |